baber/WOPTO huggingface dataset:
Patent GB-975520-A (GB)
Title: Improvements in or relating to electric gating circuits employing transistors
Inventor: WELLS PETER
IPC: H03K17/60
Filed: 1961-08-31
Abstract: 975,520. Transistor switching circuits; pulse modulation circuits. GENERAL ELECTRIC CO. Ltd. Aug. 28, 1962 [Aug. 31, 1961], No. 31383/61. Headings H3T and H4L. A transistor gating circuit comprises input and output terminals, a transistor having a control electrode and first and second further electrodes connected to the input and output terminals respectively and also via first and second rectifier means respectively to the two ends respectively of an impedance, and means to apply a signal between the control electrode of the transistor and a tapping on the impedance so as to render the transistor conducting and open the gate. As shown in Fig. 1, when a negative going control pulse is applied to terminals 12 of transformer 14 the emitter/base and collector/base diode junctions of a symmetrical transistor 1 are simultaneously forward biased together with the rectifiers 7, 10 so that the gate is open in the signal path 5, 6. By suitably adjusting the tapping 17 on resistor 9 any base current flowing in the absence of a signal on terminal 5 diodes itself equally between the electrodes 3, 4 such that there is no voltage difference between the input and output terminals. At the end of the contral pulse capacitor 16 discharges through rectifier 22 and the resultant voltage across resistor 21 reverse biases the transistor 1 and the rectifiers 7, 10 so that the gate is closed. In a second embodiment, Fig. 2 (not shown), the transistor 1 of Fig. 1 is replaced by a pair of similar conductivity type transistors having their base electrodes coupled together and to the resistor 20 and capacitor 19, their emitter electrodes connected to the input and output terminals respectively and their collectors connected together. The gating circuit may be used as a channel gate in the transmitter of a pulse code modulation communication system. Reference has been directed by the Comptroller to Specification 912,163.
Patent GB-211233-A (GB)
Title: Improvements in or relating to brushes
IPC: A46B5/00
Filed: 1922-11-17
Abstract: 211,233. Barnett, C., and Barnett, W. Nov. 17, 1922. Brush stocks; brushes with bristle surface inclined.-The stock of a nail or like brush is divided longitudinally to form narrow brushes the stocks A, B of which are pivotally connected so that they may be held together to form the equivalent of a brush having an undivided stock or mav be held to enable the free ends of the bristles to be directed towards each other to form a V- shaped brushing surface. The brushes may be mounted at each end as shown in Fig. 4, on a pivot C fitting in lugs A<2>, B<2> which form part of plates fixed to the ends of the stocks. In the construction shown in Fig. 5 the brushes are mounted on independent pivots E, F carried by a casing D and are adapted to move together by the provision of a tongue A<4> at each end of the stock A which engages in a groove B<4> in the stock B. In a modification the tongue A<4> and groove B<4> are replaced by a pin in the stock A and a hole in the stock B into which the pin projects through a slot in a plate covering the hole. A blade spring may be provided so that the inward movement of the bristles is effected against the action of the spring. A fixed set of bristles may be positioned between the two sets of movable bristles. The bristles may decrease in length towards the inner abutting sides of the stocks as shown. The Provisional Specification refers to sets of bristles mounted on backings capable of being depressed against the action of springs.
Patent GB-937766-A (GB)
Title: Improvements in the treatment of wood and in the products obtained
Inventor: THORNTON JESSE
IPC: B27K3/32
Filed: 1960-09-13
Abstract: Newly cut or green wood is treated with an aqueous borate paste so concentrated and viscous that it adheres to the wood and allows diffusion thereinto until the desired flame retardancy is achieved. Other additional humidifiers &c. mentioned are sodium bisulphate, zinc chloride, magnesium chloride, glycerol, ethylene glycol, sodium silicate and sulphated long chain olefines.  The treated wood may be wrapped in moisture-proof material.
Patent GB-505782-A (GB)
Title: Improvements in or relating to record-card controlled statistical printing machines
Filed: 1937-11-16
Abstract: 505,782. Statistical machines. BRITISH TABULATING MACHINE CO., Ltd. Nov. 16, 1937, No. 31541. Convention date, Nov. 17, 1936. [Class 106 (i)] A record card controlled machine in which data from each group of cards are printed on a separate sheet S and mechanism compares the group holes in the first card of a group with the group holes in the sheet and stops the machine if there is disagreement, is distinguished in that the card group designation is entered into a register U, T and the sheet is read whilst stationary and compared with the set-up in the register. The machine has the usual group control means GC and when the card group changes, contacts 10a are opened and 10b closed to energize the reset motor RM for total-printing and resetting. In the present invention this circuit includes contacts R2a which are normally open and are only closed when the machine stops at a card group change if a sheet S is fed into position which agrees with the first card of the new group. Each upper brush UB reading a card group column is plugged by wires 18 to normally open contacts 14b and a counter magnet 19. The first card only, of each group has a special hole which is read by a brush 11, in advance of the brushes 11, to complete a circuit 13, 11, 12, 14, 15, 16.- Relay 14 closes contacts 14a to hold itself energized and closes contacts 14b to 'energize the magnet 19. Magnets 19 (two are used in the present example) enter the card group number into a counter of which UT is the reading-out means. Switches 27 are in the full line position. After the last card of a group has passed the lower brushes LB, the machine stops with the group number of the new group (just read by brushes UB) in one counter and the total of the old group in another counter. The operator inserts the next sheet S with the two group control columns beneath two columns of reading pins 34, 35 which are mounted in an insulating plate 32 hinged at 33 and coact with conducting bars 30, 31 mounted on an insulating base 29. The operator closes key contacts 38. According to the digit registered in the units U and if the units digits of card.and sheet agree, a circuit 16, Ria, 30, 34, 37, 24, 22, 20, 21, 26, 27, 38, R1b, R1, 13 energizes coil R1 to open contacts R1a, R1b, to close contacts R1c to hold itself, and to close contacts R1d and R1e. If the tens digits of card and sheet also agree a circuit 16, R1d, 31, 35, 37, 24, 22 (section T), 27, Rle, R2b, R2, 13 energizes coil R2 which opens its contacts R2b, closes its contacts R2c to hold itself and closes contacts R2a to complete the circuit of the motor RM. The latter then prints the total of the old group and resets the counters including the one which registers the group numbers. During this cycle, contacts 39 open and de-energize coils R1 and R2 and the sheet S is fed automatically or manually to the printing mechanism in known manner.
Patent GB-1382498-A (GB)
Title: Handheld stereoscopic viewer
IPC: G02B27/22
Filed: 1972-07-06
Abstract: 1382498 Stereoscopic viewers J F BEAUCHAMP 3 Oct 1973 [6 July 1972] 31577/72 Heading G2J The viewer comprises a flat piece of rigid material e.g. injection moulded plastics having two viewing windows and being large enough to cover the eyes and be hand held without obscuring the windows. One window is plain and the other contains an optical prism. The prism may be of the Fresnel type.
Patent GB-204586-A (GB)
Title: Improvements in envelope-making machines
IPC: B31B19/00
Filed: 1922-11-18
Abstract: 204,586. Hugo, T. Nov. 18, 1922. Envelopes, making.-The two arms c, d of a link a of a chain for drying envelopes are connected at the front and back by members f, g which are so formed as to press upon the whole length of the gummed edge of the lower flap of an envelope B inserted between the links of the chain. The sealing-flap is kept open, as shown in broken lines in Fig. 5. The hinge-pins h are made a slack fit in their holes, so that the links may follow concave or convex paths in their upper or lower runs respectively, to ensure a pressure between the links on to the envelope.
Patent GB-890681-A (GB)
Title: Material reducing apparatus
Inventor: PIERSON NORMAN ALBERT
IPC: B02C13/28
Filed: 1960-09-14
Abstract: 890,681. Hammer mills. NATURIZER CO. Sept. 14, 1960, No. 31676/60. Class 59. [Also in Group XXII]. A grinder comprises helically-arranged rows of chain hammers 40 pivotally connected to bolts 38 passing through a plurality of discs 28 keyed to a power-driven shaft 20 extending through a hollow cylindrical housing 8 provided with inlet and outlet shoots 16, 18 respectively, an opening 58, Fig. 2, in the wall of the housing being covered by a stripper plate 56 having secured thereto bolts 62 to project into the housing between the paths of movement of the hammers which are each provided with a hard metal tip 46, Fig. 4.
Patent GB-1370840-A (GB)
Title: Piston machines
IPC: F01B13/06
Filed: 1972-07-06
Abstract: 1370840 Reciprocating pumps and motors; compressors SULZER BROS Ltd 6 July 1972 [7 July 1971] 31755/72 Headings F1A F1M and F1N A piston machine for use as a hydraulic pump or motor, compressor or gaseous-fluid motor comprises pistons 115 reciprocable in a cylinder block 116 rotatable via port-spherical bearing surfaces on a journal 100, piston end faces 125 being slidable on flat faces 126 formed in a drum 120 rotatable about an axis B spaced from the journal axis A. The journal 100 has fluid inlet and outlet ports 110, 111. Drum 120 is connected to a drive-shaft 121 and supported by a bearing 123 on a member 122, which has a flange 124 for holding the pistons in engagement with the drum. The pistons have hydrostatic bearing recesses supplied with working liquid, hydrostatic bearings also being provided for the drum bearing 123 and the drive-shaft bearing. The journal 100 is mounted on a member 102 which is manually displaceable for varying the eccentricity, and hence the capacity and flow direction. The cylinder block is in two parts held together by rings 118. The displaceable member 102 has sliding connections 113 for the input and output flows.
Patent GB-286803-A (GB)
Title: Improvements in or relating to prepayment meter devices
IPC: G07F15/02
Filed: 1926-12-15
Abstract: 286,803. Lister, H., and Metropolitan- Vickers Electrical Co., Ltd. Dec. 15, 1926. Electricity, supplying by meter.-In a prepayment meter mechanism, a tripping device is biassed towards its tripped position and is controlled by a member mounted upon a meter-operated' part and cooperating with an inclined plane, cam surface, slot, or gap formed in or upon a hand-operated part, so that the setting of the tripping device is effected by the movement of the hand-operated port to overcome said bias and the tripping device is released by movement of the meteroperated part without significant reaction upon the meter-operated part. As applied to a prepayment electricity meter employing a switch, such as described in Specification 253,242 or in Specification 274,559, a switch arm 10 mounted on a shaft 11, which can be rotated after prepayment, bears by an arm 12 under the action of a spring 17 against a rocker 13, which it tends, when the switch is closed, to rotate in an anticlockwise direction. This rotation is prevented by a pivoted detent 22 having an inclined surface 21 engaged by a roller 20 on an arm 19, which extends from a spindle 16. The spindle has a pinion 15 engaging a rack 14 on the rocker, so that the switch, when closed', tends to move the detent 22 to the right. This movement is normally prevented by a plunger 23 which bears against a lever 24 pivoted eccentrically in lugs in a meter-driven wheel 25 and passing through a slot in the spindle of this wheel. The lever 24 is held by a roller 26 on its free end contacting with the face of a hand-operated disc. 27 which is mounted adjacent the wheel 25 and is provided with an inclined plane or cam surface 28 formed by cutting away a portion of the disc and bending a tongue backwards. When the wheel 25 has been rotated bv the meter so that the roller 26 is opposite the bent tongue 28, the lever 24 is pushed back and the detent 22 released, allowing the switch to open. After prepayment to reset the switch by rotation of a handle, the disc 27 is moved anticlockwise to return the lever 24 andl reset the detent 22. Coin-slit closing-devices.-To prevent the insection of too many coins at a time, a projection 31 on the disc 27 encages a tappet 32 pivoted on the wheel 25. This tappet engages and moves a lever 33 to project a spring-controlled pin 36 across the coin-slot.
Patent GB-465397-A (GB)
Title: Knife operating mechanism for shearing machines for cutting sheet metal
IPC: B23D15/12
Filed: 1936-11-20
Abstract: 465,397. Shearing. WACHTER, A., and MASCHINENFABRIK WEINGARTEN VORM. H. SCHATZ AKT.-GES. Nov. 20, 1936, No. 31859. [Class 83 (iv)] The cutter carrier 6 of a reciprocating blade machine is actuated by toggle links 4, 5 jointed to a fixed frame 9 and the carrier and operated by a member 10 oscillated by a crank 12. The links 4 are of equal length and the links 5 decrease in length uniformly from the left.
Patent GB-780687-A (GB)
Title: Improved apparatus for automatically vacuum coating of interior of glass tubes with metal
Inventor: NELSON ALDEN W
IPC: C23C14/56
Filed: 1955-11-08
Abstract: 780,687. Aluminizing cathode ray tubes. ENTWISTLE CO., J. L. Nov. 8, 1955, No. 31923/55. Class 82(2) [Also in Group XI] An automatic vacuum coating machine for aluminizing cathode ray tubes comprises a stationary frame around which a series of carts 11 are arranged to be moved by an endless conveyer. Each cart has a holder for a cathode ray tube 10, a gas tight seal being formed at its neck so that it may be evacuated by suitable pumps arranged on the cart and then an electric heater is brought into action to vaporize aluminium on the inside of the tube. After the coating operation, air is bled into the tube to destroy the vacuum permitting the tube to be removed. These various operations are controlled as the carts travel round the frame, by stationary buttons engaging switches on each cart. The carts are heavy e.g. “ of their loaded weight and the pump &c. are below the top, thus minimizing vibration. Each cart (Fig. 3) is carried by rollers 30, 38 on rails 34, 39 and advanced by a conveyer chain 94 engaging a projecting arm 97. The cathode ray tube 10 is held with a gas tight seal around its neck, and with the heater element 37 (containing the coating metal as an aluminium slug) projecting therein. A coarse (20) and a fine motor driven pump are provided (only one shown) and, acting in conjunction with the latter, an oil diffusion pump 22. These are controlled by switches 53, 58 and pressure sensitive valves in a conventional manner. The heater is controlled by switch 63. All the switches have projecting arms furnished with rollers 61, 62, 66 which engage the trip buttons 67, 68 as previously stated, thus operating the pumping and heating means in correct sequence. The power for the heater is fed in by brushes 75 on each cart, sliding on bus bars 76. The bus bars are not continuous and thus the power fed into any station can be varied and is controlled by powerstats 78 on the primaries of the heater transformer on the frame. In use a preheat to melt the aluminium slug is followed by the vaporizing heat. The diffusion pump 22 is provided with cooling water by a pump 82 from the water trough 83 running round. and attached to, the frame. Power for the pump motors, diffusion pump heater and valve control switches is fed from a power rail 91, (see Fig. 1) the pick-up being by means of trollies 92 on the carts.
Patent GB-244797-A (GB)
Title: Improvement in fuels
IPC: C10L1/14
Filed: 1925-12-17
Abstract: Liquid fuel for use with burners consists of heavy hydrocarbon oil and an added small proportion of a compound of a hydrocarbon radical and a metal or metalloid, whereby on combustion more heat units are given out.  In an example 1-2 lb. of benzyl sulphide or diphenyl sulphide or dibenzyldiselenide is added to 1000 lb. of Diesel oil. Oils specified are gas oil, Diesel oil, or other petroleum fuel oil of greater density than any kerosene, say over 0.82, and the corresponding oils obtained from tar, shale, lignite, peat, and asphaltic materials.  Other compounds specified are thiophenol, thallium triphenyl, diphenyl telluride, diphenyl selenide or diselenide, and the phenyl, diphenyl, triphenyl, and tetraphenyl compounds of selenium.  Specifications 196,237 and 224,102 in which similar fuels are used in internal combustion engines are referred to.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of the fuel in an internal combustion engine, and also specifies as suitable compounds the halogen substituted naphthalenes e.g. mono-, di-, and tri-, chlor, or brom-naphththalenes, the radical compounds of the metals or metalloids in Group 6 of Mendel<\>aeeff's table, or any material generating a metal or metalloid and a hydrocarbon radical.  This subject-matter does not appear in the Specification as accepted.
Patent GB-270191-A (GB)
Title: Improvements relating to separating machines
IPC: B02C13/14
Filed: 1926-03-23
Abstract: 270,191. Plath, G. March 23, 1926. Pneumatic separating.-In separating machines of the kind comprising two concentric chambers c, d through which circulates a stream of air, and a rotary disc 3 which projects the material into the stream of air as it rises in the inner chamber c, the shaft 2, carrying the disc 3 is mounted free from shock in bearings in a rigid tubular member 7 which serves for supplying the material to the distributing disc. The member 7 carries a foot-step bearing 8 for the shaft at its lower end and is secured to strong beams 9 which are preferably anchored to the floor of the engine room. The upper shaft bearing is carried by a plate 11 with feed apertures 10. In the apparatus described, the rotary disc is provided with pins 4 adapted to coact with pins 6 provided on a disc 5 secured to the lower end of the member 7 for comminuting the material. The circulating stream of air is produced by a fan on the underside of the disc 3.
Patent GB-976769-A (GB)
Title: Flashing turn signals for automobiles
IPC: B60Q1/34
Filed: 1962-08-21
Abstract: 976,769. Flashing indicators. TRIDON MANUFACTURING Ltd. Aug. 21, 1962 [Sept. 2, 1961], No. 32051/62. Headings G4F and G4Q. A flashing control switch controlling for example, flashing indicators 10 on a car, for use with a D.C. power source 12 comprises a magnetisable core 7 surrounded by two high resistance balanced coils 14, 15 in parallel relative to each other but oppositely arranged so as to normally provide magnetic forces which cancel out. The connection of one of the two coils, 15, is through a capacitor 17 and a shunt circuit is arranged to by pass the relay coils, this shunt circuit being interrupted by normally open contacts 93, 91 on an armature 8. The armature is actuated to close the contacts 93, 91 in response to magnetisation of the core 7, which magnetisation occurs when current flows in only one of the relay coils. When used in the control of flashing indicators, the control switch is initiated by the closure of operating switch 27, whereupon current flows through the bulbs 10 from the battery 12 via the high resistance path of the winding 14, and at the same time current flows through the winding 15 to charge the capacitor 17, so effectively keeping the core 7 unmagnetised. This current ceases as the capacitor becomes fully charged, with the effect that the core 7 becomes magnetised, so that the armature 8 is actuated, closing the contacts 91 and 93 to cause the flasher bulbs 10 to be illuminated through a low resistance path. The armature remains actuated until the capacitor has discharged through the windings 15, whereupon the magnetic pull on the armature ceases, the contacts open and the sequence begins again. A pilot bulb 23 flashing alternately with the signal bulbs may be included in the circuit by adding another pair of contacts 93, 92 to the relay switch.
Patent GB-1248662-A (GB)
Title: Improvements relating to anaesthesia apparatus
IPC: A61M16/18
Filed: 1969-06-25
Abstract: 1,248,662. Anaesthesia apparatus. J. R. TUGWOOD (Foregger Co. Inc). 25 June, 1969, No. 32074/69. Heading AST. [Also in Division F2] An anaesthetic apparatus comprises a container 11 for volatile liquid anaesthetic 92, a valve block 12 mounted on the container 11 including a gas-mixing chamber 113 formed between two gas-flow regulating valves 98 and 105 constituting a composite valve 13, a conduit 53, 206 from a gas inlet- 14 to the container 11 and then to the mixing chamber, a passage 88 from the inlet 14 to the chamber 11 and another passage 69 from the chamber 11 to an outlet 15, and a third valve 73 in the conduit to connect the conduit 53 to the second passage 69 and shut off gas-flow through the container. A pressure-relief valve 42 is provided between inlet 14 and conduit 53 and passage 88 and comprises an enlarged head on a spring-biased stem 62 which can be depressed by excessive gas pressure to permit gas to flow into a passage 69. The container 11 comprises a coil 87 through which gas enters, surrounded 'by a coiled wire 94 located between wicking 95 and 96 contacting. the anaesthetic 92 through which the gas flows and becomes saturated with anaesthetic. Anaesthetic-saturated gas is mixed with gas from inlet 14 in chamber 71 then passed to outlet 15. Shut-off valve 73 comprises a shaft 74 attached at the top to a disc 43 and at the bottom to a disc 72 carrying an annular sealing member 72'. The portion of valve block 12 co-operating with the member 72' has five ports 164, 167, 128, 76, 54 connected to passages 206, 166, 123, 77, 53 respectively therein. Disc 72 may be rotated so that in one position ports 54 and 76 communicate via a passage 75 in member 72' and saturated gas can flow from the container through port 164 into conduit 206, and in another position (fig. 15) port 128 is linked to port 54 via passage 75 and container 11 is open to the atmosphere via port 167 and passage 166. Composite valve 13 (fig. 6) comprises lower and upper end brass portions 106 and 109 respectively, located in block 12, a reciprocable stem 116 passing through the valve 13 supporting valve members 210 and 117 movable vertically with respect to the valve seats 212 and 114 respectively to widen and narrow the passages between valve seats 114, 120 and 212, 211 respectively. Stem 116 is vertically adjustable by means of a screw 137 received within a bore 136 in stem 116. The stem is prevented from rotating by a threaded pin 214 slidable in a slot in valve element 210. Gas from the inlet 14 enters valve 13 through passage 88 and gas with anaesthetic from container 11 enters through conduit 206. Valve 105 is temperature-responsive and is partly formed of a plastics material of relatively large coefficient of thermal expansion, the other part being of brass. Valves 73 and 13 are operated together by means of knob 19 which engages with screw 137 to reciprocate the stem 116 and pin 154 on disc 43 to rotate disc 72, so that when valve 98 is closed, then no gas flows to the container 11.